CN203038060U

CN203038060U - Apparatus capable of prolonging service life of PLC programmable controller

Info

Publication number: CN203038060U
Application number: CN 201220744336
Authority: CN
Inventors: 陈昆奇
Original assignee: CHANGSHA HONGFA PRINTING INDUSTRIAL Co Ltd
Current assignee: CHANGSHA HONGFA PRINTING INDUSTRIAL Co Ltd
Priority date: 2012-12-31
Filing date: 2012-12-31
Publication date: 2013-07-03
Anticipated expiration: 2022-12-31

Abstract

An apparatus capable of prolonging a service life of a PLC programmable controller comprises a solid-state relay, a normally-open input relay, a normally-close input relay, an output relay and a miniature relay. The normally-open input relay, the normally-close input relay and the miniature relay are connected in series. The output relay is connected in parallel with the normally-open input relay. The solid-state relay is connected in parallel with the miniature relay. By using the apparatus of the utility model, a situation that the contact generates an arc so that production work is influenced can be avoided; the structure is simple and reconstruction is easy.

Description

A kind of PLC Programmable Logic Controller device in serviceable life that prolongs

Technical field

The utility model relates to a kind of circuit, is specially a kind of PLC of the prolongation Programmable Logic Controller device in serviceable life.

Background technology

At present, on PLC input, output interface circuit, it plays a part the information of transmitting between PLC and the peripherals.The automatic ascending, descending of printing equipment pile, it is to be input to the PLC controller by the command information that peripheral control circuit (microswitch) sends, microrelay when the controller the inside obtains starting working once after the instruction, got electricly again by the ac contactor coil that outputs to the ascending, descending motor of PLC, the A.C. contactor adhesive drives motor and rises once.And in press, the PLC controller need be worked about about 100,000 times every day repeatedly, and because powerful load causes the contact of the inner microrelay of PLC to produce electric arc, cause producing maloperation and might even can melt together, thereby pile can not stop toward rising or relay damaged, and consequence is serious.

The utility model content

The technical matters that the utility model solves is to provide a kind of PLC of the prolongation Programmable Logic Controller device in serviceable life, to solve the shortcoming in the above-mentioned background technology.

The technical matters that the utility model solves realizes by the following technical solutions:

A kind of PLC Programmable Logic Controller device in serviceable life that prolongs, comprise solid-state relay, often drive input relay, normally closed input relay, output relay and midget relay, described input relay, normally closed input relay and the midget relay often opened is cascaded, described output relay is in parallel with normal last relay, and described solid-state relay is in parallel with midget relay.

Beneficial effect

The utility model can be avoided the contact to produce electric arc and influence the carrying out of production work, and simple in structure being easy to transformed.

Description of drawings

Fig. 1 is a kind of PLC Programmable Logic Controller device synoptic diagram in serviceable life that prolongs.

Embodiment

For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.

A kind of PLC Programmable Logic Controller device in serviceable life that prolongs, comprise solid-state relay 1, often drive input relay 2, normally closed input relay 3, output relay 4 and miniature relay 5 devices, described input relay 2, normally closed input relay 3 and the midget relay 5 often opened is cascaded, described output relay 4 is with often to drive input relay 2 in parallel, and described solid-state relay 1 is in parallel with midget relay 5.

More than show and described ultimate principle of the present utility model and principal character and advantage of the present utility model; the technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the instructions just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications; these changes and improvements all fall in claimed the utility model scope, and the claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1. one kind prolongs the PLC Programmable Logic Controller device in serviceable life, comprise solid-state relay, often drive input relay, normally closed input relay, output relay and midget relay, it is characterized in that: described input relay, normally closed input relay and the midget relay often opened is cascaded, described output relay is in parallel with normal last relay, and described solid-state relay is in parallel with midget relay.